Spring-wheel.



I. FLIEGEL.

SPRING WHEEL.

APPLIOATION FILED JULY 2, 190a.

Patented June 1, 1909.

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J. FLIEGEL.

SPRING WHEEL.

nrmcrno'n FILED JULY 2, 1908;

923,161. Patented June 1', 1909.

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J. PLIEGEL. SPRING WHEEL.

APPLICATION FILED JULY 2, 1908.

' 923, 161. Patented June 1,1909.

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Specification of Letters Patent.

Patented June 1, 1909.

Application filed July 2, 1908. Serial No. 441,666.

To all whomtt may concern;

Be it known that'I, Josni FLIEGEL, sub ect "of the German Emperor, resicling at Sprottauer Ohaussee, lilallm'itz, Germany, have invented new and useful Improvements in Spring-Wheels, of Wll1 3l113l16 following is a specific ation.

This invention relates to a wheel having its hubltiree from the rim and levers connected to said run and engaging the hub.

According to theinvention, the levers provided with straight laced .abutments bear tangentially against the periphery of the hub and are held in this position by springs,

whichare arranged in such a manner that they abut the neighboring lever with a bell crank lever and consequently always bear on the preceding lever.

Inconformity with the yielding capacity 01 the springs acting as buflers, the hub is therefore adapted to shift eccentrically in the plane of the wheel rim. In order that with sucheccentric displacement, the buffer springs at'the Opposite side may only act on the levers up. to a certain limit, the springs are lim ted in their extensive or expansive capacity. Consequently, the spring which is underneath and supports the hub with its lever is not influenced by the oppositely located spring. The springs are so tensioned that each lever can practically bear the load of the axle. I

The yielding "of the hub with respect to. 1 any jerking action is assisted by the supporting levers 1 011111112; in the forward and rear warddirection of movement inclinedplanes along which the hub slides. During this slidingmovement, a descent of the hub from the centeroi the wheel takes place, which would materially impede running if the hub maintained the lowered position. Now by the arrangement of the levers and springs,

the hub is raised indue time not merely by that spring which. counteracts the actual supporting lever but also by the lever itself being returned to the central position with the aidol' the next following lever, whose spring has been previously tensioned by the supporting lever cluringits descent.

Referring to the accompanying drawing, F igure .1 shows the side elevation of the wheel one of the springs bemg represented in I section; 2 shows diagrammatically the most eccentric position, which the wheel hub may assume in the event ol' an extraordinary strong jerk Fig. 8 is an elevation of the wheel without drivers and Fig. 4 is a section on line AB of Fig. 1. Fig. 5 is an enlarged sectional detail view of the spring and its cooperating parts.

The rigid rim 1 is preferably of U-shaped cross'section and is kept in permanent tension by the tie bolts or braces 2, 3, 4, 5. The wheel hub 7 secured on the axle 6 forms the abutting surface for the levers 8, 9, 10, 11. These levers engage tangentially with their free ends the hub 7 having straight faced abutments for that purpose and the said levers are pivoted at 12,13, 14, to the rim 1. The appropriate pressure toward the center of the wheel is imparted to the levers by the springs 16, 17, 18, 19. Each spring is detachably connected with its corresponding lever and adapted to oscil late on a bracket (Fig. 1, 20, 21, 22, 23) that is secured to the neighboring lever.

As shown in Fig. 1 by the sectional view of the one spring, each spring such as 16 acting on the lever 8 is mounted on the base of a guiding sleeve 24, which is articulated with the bracket 20. The latter is secured to the neighboring lever 11. The spring bolt 26 is slidably arranged longitudinally in the sleeve 24. A stop pin inserted transversely in the bolt 26 and enterin f longitudinal slots of the sleeve 24 contro s the longitudinal movement of the bolt 26 and consequently serves for limiting the stroke of the spring. The spring tension is so adjusted by turning nut 27 and check-nut 28 that each spring in itself is adapted to bear practically the full pressure of the axle. In the ordinar working system, however, the load is a so distributed on two neighboring levers. The spring bolt 26 has at the top end a longitudinal bore wherein. the stem 29 is fitted which with a conical head enters a socket member of the lever 8 and is locked therein by the fiat spring latch 31. By loosening the nuts 27, 28, the spring 16 becomes slack and the ring bolt 26 may move downwardly in the lleeve 24 so that when the spring latch 31 is released, the conical head of the stem 29, can be disengaged from the socket of the lever 8. The spring with its guiding sleeve may then be tilted away. As soon as the stem 29 is taken out and the nuts 27 and 28 are removed, the spring 16 can be readily dismounted for being replaced. The hub 7 is provided on both sides with the flanges 32, 41 (Fig. 4) between which the levers 8, 9, 10, 11 are guided, so as to prevent their lateral displacement. As propelling means, in the case each lever, a casing pivoted to said bracket,

of the wheel being a driving Wheel, four drivers 33, 34, 35, 36 are secured on the flange 32. These drivers bear against the brackets 37, 38, 39, 40 which are secured to the rim 1. Fig. 2 represents the most eccentric position, according to which in consequence of the constant tendency of the hub to move forwardly and downwardly the drivers 0 crate consecutively but only in a forward riving direction.

Having now particularly described and ascertained the nature of my said invention and in what manner the same is to b'e performed, I declare that What I claim and wish to secure by Letters Patent is 1. A wheel having a hub, a rim, levers pivoted to the rim and bearingtangentially against the hub, and springs connecting each lever to the adjacent lever.

2. A wheel comprising a hub and a rim, levers pivoted to the rim and extending, inwardly and bearing tangentially against the hub, abracket secured to the outerend of each lever, and a spring carried by each bracket and engaging the adjacent lever.

33. A wheelcomprising a hub and a rim, levers pivoted to the rim and extending inwardly and bearing tangentially against the hub, a bracket carried by the outer end of a spring in-said casing, and a bolt secured to the outer end of said'spring and engaging the inner end of the adjacent lever.

4. A wheel comprising a hub and a rim, levers pivoted on the rim and extending inwardly and bearing against the hub, a bracket secured to the outer end of each lever, a casing carried by said bracket, a spring in said casing, a bolt carried by said spring, a stop pin carried by the bolt for limiting the movement thereof, a head on the bolt, a socket on the adjacent lever into which the head fits, and a spring catch for holding the head in the socket.

5., A Wheel comprising a hub and a rim, levers pivoted on the rim and extending in wardly and bearing against the hub, brackets on the outer ends of each lever, springs supported on said brackets and engaging the adjacent lever, drivers secured to the hub extending outwardly, and projections on the rim adapted to be engaged by said drivers.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

JOSEF FLIEGEL.

Witnesses HENRY HASPER, l/VOLDEMAR HAUPT. 

